Global Patent Index - EP 0989572 A2

EP 0989572 A2 2000-03-29 - Electrolyte for use in a capacitor

Title (en)

Electrolyte for use in a capacitor

Title (de)

Elektrolyt für einen Kondensator

Title (fr)

Electrolyte pour utilisation dans un condensateur

Publication

EP 0989572 A2 (EN)

Application

EP 99306855 A

Priority

US 9833098 P

Abstract (en)

An electrolyte for activating an electrolytic or electrochemical capacitor is described. The electrolyte preferably includes a mixed solvent of water and ethylene glycol having an ammonium salt dissolved therein. An acid such as phosphoric or acetic acid is used to provide a pH of about 3 to 6. The electrolyte is particularly useful for activating a ruthenium oxide/tantalum capacitor having an anode breakdown voltage in the range of 175 to 300 volts.

IPC 1-7 (main, further and additional classification)

H01G 9/035

IPC 8 full level (invention and additional information)

H01G 9/035 (2006.01); H01G 9/02 (2006.01); H01G 9/022 (2006.01); H01G 9/028 (2006.01)

CPC (invention and additional information)

H01G 9/022 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0989572 A2 20000329; EP 0989572 A3 20020313; EP 0989572 B1 20070103; AT 350757 T 20070115; DE 69934642 D1 20070215; DE 69934642 T2 20071025; JP 2000150316 A 20000530; US 6219222 B1 20010417

INPADOC legal status


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